| Word | Definitions | Synonyms |
|---|---|---|
| euglena | (noun) minute single-celled green freshwater organism having a single flagella; often classed as algae | - |
| galena | (noun) soft blue-grey mineral; lead sulfide; a major source of lead | - |
| melena | (noun) abnormally dark tarry feces containing blood (usually from gastrointestinal bleeding) | Synonyms: melaena |